System for transmitting variable conditions



V E. ROUCKA SYSTEM FOR TRANSMITTING VARIABLE CONDITIONS Filed Jan. 2.1923 ATTORNEY Patented Sept. 6, 1927.

ERICK ROUGKA, OI IBLAHSKO, CZECHOSLOVAKIA.

SYSTEM FOR TRANSMITTING VARIABLE CONDITIONS.

Application Med January 2, 1923, Serial No. 810,389, and inCzechoslovakia Janaury 10, 1928.

This invention relates to a system of transmitting variations in aguantity, quality or condition, for example u 1d pressure, temerature,etc. by means of mpulses of auxiliary ener produced at difiierent tlmePOSI- tions or rzl ations in or to equal intervals of time dependentupon the ma 'nitude of the condition at the moments of the impulses sothat said time positions of the impulses are functions and measures ofthe condition. The impulses may be transmitted to a receiving apparatusfor any desiredpurpose such as measuring or recording the condltlon orfor controlling other apparatus, etc.

The object of the present invention is to provide in such a system meansfor compensating the variations of the quantiy, quality or condition bya mechanical force variable in cycles of equal intervals of time andproduced in any suitable manner, f or instance by a spring, weight,fluid condition, electrical quantity, etc.

The invention consists in general of a means sensitive to variations inthe condition to be transmitted which actuates a movable member, saidmeans being periodically or during equal intervals of time balanced orcompensated by said auxiliary force, and said movable member when saidmeans is so compensated serving to control the production of suddenchanges or impulses of auxlliary energy which are transmitted to areceiving, measurin or recording device WhICl'l may be positioneremotely w th respect to the means sensitive to the condition.

In the accompanying drawings I have shown several forms and arrangementsof apparatus for carryin out my invention, but it will be understoo thatthis is only for the purpose of illustrating the principles of theinvention and that many modifications and changes can be made in theconstruction and arrangement of the apparatus without departing from thespirit or scope of the invention.

In said drawings in which the same characters of reference indicatecorresponding and like parts,

Figure 1 is a diagrammatic illustration of a system constructed inaccordance with my invention;

Figure 2 is a similar view of a modified form of a paratus forcompensating the variations o the quantity or quality;

Figure 3 is a transverse sectional view taken on the line 3-3 of Figure2;

.duces a difference in Figure 4 is a sectional view of a modified formof device to be actuated by the flow of fluid to be measured, and

Figure 5 illustrates a still cation of such a device.

Referring particularly to Figure 1, the reference character 2 designatesa pipe or conduit through which flows a fluid to be measured, saidconduit being provided with a throttling orifice member 4 whichpropressure at opposite sides thereof. A receptacle 8 for a fluidofgreater specific gravity than .that of the fluid being measured isconnected to the conduit 2 at one side of the throttic orifice, saidreceptacle being also connected by means of a helical coil of tubing 12to one end of a second receptacle 10, the other end of which isconnected by a second helical coil 12 to the conduit 2 at the other sideof the orifice. The receptacle 10 is connected by a rod 14 to one end ofa lever 16 pivotally mounted intermediate its ends as at 18. The end ofthe lever 16 opposite the rod 14 is connected by as ring 30 to one endof a rod 32, the other en of which carries a roller 36 following a cam34 driven through suitable gearing 42 from a synchronous electric motor40 connected to any suitable source of alternating current. The roller36 is maintained in engagement with the cam 34 by means of a spring 31.A counterweight 22 on the lever 16 balances the receptacle 10 and coils12.

In the operation of the system so far described, upon a difference inpressure in the conduit 2 at opposite sides of the orifice 4, the fluidin the receptacles 8 and 10 is compressed so as to extend or contractthe coils 12. This motion is transmitted by the rod 14 to the lever 16which is oscillated about its pivot 18, said oscillation being limitedby fixed stops 20. The forces exerted on the lever 16 upon variations inthe pressure difference are periodically compensated by the forceexerted by the s ring 30 the tension of which is periodical y varied inregular intervals of time by the cam 34, one complete revolution ofwhich determines one interval of time.

The lever 16 carries a contact member 52 adapted to cooperate with aresilient strip 50 which is in turn adapted to cooperate with a fixedcontact 54, the said contact member 52 being connected b the wire 66through a source 68' of auxiliary electric further modifienergy to areceiving or recording device and thence to the ground as at 96. Thecontact 54 is connected to the ound as at 64. When the lever 16 is oscilated in one direction the contact member 52 engages the strip 50 so asto close the circuit through the auxiliary energy 68, thereby producinganampulse or sudden change of said auxiliary electric energy. Theuration of said impulse is determined by the length of time necessaryfor the member 52 to move the strip 50 from engagement with the contactThe receiving or recording device is shown as comprising a hand orpointer 92 carrying at one end a recording en 82 adapted to cooperatewith a movab e record stri 94. The said lever 92 is pivotally mountedintermediate its ends at 80, and the end thereof opposite the pen 82carries a roller 76 following a cam 74 driven through suitable gearing 72 from a synchronous electric motor T0 which may be connected to thesame source of alternating current as the motor 40. The cams 34 and arethus synchronously driven. The pen 82 is normally spaced from the recordstrip 94 and is oscillated transversely of the record strip by means ofthe cam 74. A lever 88 pivotally mounted at one end to a fixed supportas at overlies the pen carrying end of the pointer 92 and is providedwith an armature 86 cooperating with a magnet 84 connected in circuitwith the switch mechanism 5054 and source of electric energy 68. Upon animpulse of auxiliary energy from the source 68, the magnet 84 isenergized and attracts the armature 86 so as to force the lever 88against the pointer 92 and thereby force the pen 82 into engagement withthe record strip 94. The contacts of the pen with the record strip aremade in accordance with the moments of compensation of the forcesproduced on the lever 16 by the pressure difference in conduit 2 by thevariable force 30, and the relation or time position of the impulses ofauxiliary energy and the contacts of the pen 82 with the record strip toand in the time interval determined by a complete revolution of the cam34 is a function of the quantity or quality.

For preventing an impulse of auxiliary energy as the switch mechanism52, 50, 54 returns to its normal position, I provide a rotary switchdriven synchronously with the cam 34 and connected in circuit with thesource of auxiliary energy 68. Said switch comprises a body portion 58of insulation having a segmental peripheral conducting portion 56adapted to be engaged by one of a pair of brushes 62. The other brush 62contacts with a cylindrical conducting portion 60. The length of theconducting portion 56 is such as to permit a closing of the circuit onlyduring the moment of compensation and the measuring impulse of auxiliaryenergy.

It is also possible to transmit a plurality of conditions of the fluidin the conduit 2. For instance, I may utilize a Bourdon tube 26 havingone end connected through a spring 28 to the lever 16 at the side of thepivot opposite the compensating spring 30, the other end of said tubebeing connected by a ipe 24 to the receptacle 8 so that the to e 26 issensitive or responsive to the fluid pressure at one side of thethrottling orifice. The variations in said pressure expand and contractthe tube 26 so as to exert an influence on the lever 16. In a similarmanner'I might transmit variations in the temperature of the fluid aswell as the difierences in pressure, etc.

In Figure 2 I have shown a modified construction of apparatus fortransmitting the variations of the condition to the receiving orrecording devices. In this construction the fluid to be measured flowsthrough a. conduit 110 in which is arranged transverse- 1y a vane 116pivotally mounted at one end on a shaft 114 in a casing 112 secured tothe conduit 110 by means of straps 111. The shai' t 114 is providedexteriorly of the casing 112 with an arm 118 car ing a contact portion119 to cooperate with a contact 120, the portion 119 and the contact 120corresponding to the switch mechanism 52, 50, 54 of Figure 1. The vane116 and arm 118 are actuated by the force of the flow of fluid throughthe conduit 110. The arm 118 is connected by a resilient member 112 toone end of a lever 124, the opposite end of which is mounted on a knifeedge in a oke 126 supported by a spring 128 from a med support 130. Afulcrum roller 132 is arranged between said lever and a fixed guide 134,said fulcrum roller being movable longitudinally of the lever to varythe leverage. The said roller is shown as carried in a fork at one endof a lever 136 pivotally mounted at its opposite end to a fixed supportat 138, said lever being provided intermediate its ends with a pin 135engaging a cam groove 142 in a drum 140. Said drum 140 is driven throughgearing 144 by a synchronous motor 146 correspondin to th s motor 40.The interval of time is etermined by one complete revolution of the drum140, and the mechanical force 128 compensating the force produced on thearm 118 by the fluid flow is periodically varied by swinging of thelever 136 and movement of the roller 132 longitudinally of the lever124. The impulses of auxiliary energy may be transmitted' from theswitch mechanism 119, 120 to any suitable receiving or recording device,for instance that shown in Figure 1.

In Figure 4 the vane 168 corresponding to the vane 116 is mounted in:r'gasket like casing 164 connected between two sections 160 and 162 ofa conduit through which the fluid to be measured may flow. The operationof this construction is substantially identical with that of Figure 2.

, In Figure 5 I have shown a further modification of an apparatus fortransmitting variations of the condition to a movable member, such asthe lever 16. In this form of apparatus the reference character 17 0designates a diaphragm casing'in which is mounted a diaphragm 172,opposite sides of which are connected b pipes 174 to opposite sides ofthe thrott ing orifice of the conduit 2. The diaphragm is thus sensitiveto differences in pressure at opposite sides of said orifice. One sideof the diaphragm is connected through a compensating spring 178 to a rod170 periodically reciprocated similarly to the rod 32 of Figure 1 tocompensate the forces acting on the diaphragm incident to the pressuredifference. The other side of the diaphragm is engaged by a lever 178connected to a shaft 180 which projects outwardly of the casing andcarries an arm 182 corresponding to the arms 16 and 118 of Figures 1 and2.

It should be understood that the present application is basedparticularly upon the transmitting apparatus, the general combination oftransmitting apparatus of this type and receiving means to cooperatetherewith being described and claimed in my copending application SerialNo. 625,153, fi'ed March 14, 1923. Impulse transmitting svstems of thisgeneral character are also disclosed in Patents Nos. 1,412,586 and1,434,064 of April 11, 1922 and October 31, 1922, respectively.

While I have shown one type of receiving or recording device, it will beunderstood that any other suitable device for receiving the impulses ofauxiliary energy for controlling purposes or for measuring thevariations of the conditions, may be utilized.

Having thus described the invention, what I claim is:

1. A system for transmitting variable conditions, comprising movablemeans actuated by force in accordance with variations in the conditionto be transmitted, means for varying an extraneous force in cycles ofregular intervals of time, a source of auxiliary energy, and means forproducing cooperation of said movable means and said second-mentionedmeans so that at a point in each of said cycles dependent upon the thenmagnitude of said condition said extraneous force compensates the forceexerted on said movable means by said condition to produce an impulse ofsaid auxiliary energy whereby the time position of said impulse in theinterval of time of the corresponding cycle is a function of themagnitude of said condition at the moment of said impulse.

2. A system for transmitting variable conditions, comprising movablemeans actuated by force in accordance with variations in the conditionto be transmitted, means for varying an extraneous force in cycles ofregular intervals of time, a. source of auxiliary energy, means forcontrolling said auxiliary energy, a movable member, and meansoperatively connecting said movable memberto said movable means and saidsecondmentioned means so that at a oint in each of said cycles dependentupon t e then magnitude of said condition said extraneous forcecompensates the force exerted on said movable means by said conditionand said movable member is moved in one direction to actuate saidauxiliary energy controlling means to produce an impulse of said energy,whereby the time position of said impulse of auxiliary energy in theinterval of time of the corresponding cycle is a function of themagnitude of said condition at the moment of said impulse.

3. A system for transmitting variable conditions, comprising movablemeans actuated by force in accordance with variations in the conditionto be transmitted, means operating in cycles of regular intervals oftime for regularly varying the force of said spring, a source ofauxiliary energy, and means for producing cooperation of said movablemeans and said second-mentioned means so that at a point in each of saidcycles dependent upon the then magnitude of said condition said force ofsaid spring compensates the force exerted on said movable means by saidcondition to produce an impulse of said auxiliary ener whereby the timeposition of said impu se in the interval of time of the correspondingcycle is a function of the magnitude of said condition at the moment ofsaid impulse.

4. A system for transmitting variable conditions, comprising movablemeans actuatedby force in accordance with variations in the condition tobe transmitted, a spring, means operating in cycles of regular intervalsof time for regularly varying the force of said spring, a source ofauxiliary energy, means for controlling said ener a movable member, andmeans operatively conmeeting said movable member to said movable meansand said spring so that at a point in each of said cycles dependent uponthe then magnitude of said condition the force of said springcompensated the force exerted on said movable means by said conditionand said movable member is moved in one direction to actuate saidauxiliary energy controllin means to produce an impulse of saidauxiliary ener whereby the time position of said im a energy in theinterval 0 time of the corof auxiliary responding cycle is a function ofthe magnitude of said condition at the moment of said impulse.

5. A system for transmitting variations in the flow of fluid, comprisinga device mounted in a fluid conduit and movable by dynamic action of theflow of fluid, a source of auxiliary energy, said energy, and means forappl ing an extraneous oroe regularly variab e ,in cycles of regularintervals of time to said device so that at a point in each of saidcycles defiendent' upon the then magnitude of said ow of fluid the forceexerted upon said device by said fluid flow is compensated by the saidregularly variable force to cause cooperation of said device and saidsecondmentioned means to actuate said auxiliary energy controlling meansto produce. an impulse of said ener whereb the time position of saidimpu se in the interval of time of the corres onding c cle is a functionof the ma itu e of the uid flow at the moment 0 said impulse.

6. A system for transmitting variations in the flow of fluid, comprisinga device mounted in a fluid conduit and movable by dy namic action ofthe flow of fluid, a source 0 auxiliary energy, means for controllingsaid energy, a movable member, operative connections between saidmovable member and said device, and means for a lying an extraneousforce regularly varia b e in cycles of regular intervals of time to saidmovable member so that at a point in each of said cycles dependent uponthe then magnitude of the fluid flow the force exerted on said movablemember by said device is'compcnsated by the said extraneous force andsaid movable member is moved in one direction to actuate said energcontrolling means to roduce an impulse 0 said auxiliar energy, wherebthe time ition of sai impulse in the interval of time of thecorresponding cle is a function of the magnitude of said grid flow atthe moment of the impulse.

7. A system for transmitting a plurality means for controlling 7 offluid conditions, com rising a plurality of devices each under i uenceof one of the conditions to be transmitted, a movable memher, anoperative connectionbetween said movable member and each of saiddevices, a source of auxiliary energy, means for controlling saidenergy, and means for a lying an extraneous force regularly varla le incycles'of regular intervals of time to said movable member whereby at apoint in each of said cycles dependent upon the then magnitudes of allof said fluid conditions the sum of the forces exerted on said movablememher by said conditions is compensated by said extraneous force andsaid. movable member is moved in one direction to produce an impulse ofsaid ener so that the time position of said impulse 1n the interval oftime of the corresponding cycle of variation of said extraneous force isa function of the magnitudes of said conditions at the moment of saidimpulse.

8. A system for transmitting variable conditions, comprising movablemeans actuated by force in accordance with variations in the conditionto be transmitted, a lever fulcrumed intermediate its ends, an operativef connection between one end of said lever and said first-mentionedmeans, means for applying an extraneous force regularly variable incycles of regular intervals of time to the other end of said lever sothat at a point in each of said cycles of variation of said extraneousforce dependent u on the then magnitude of said condition t e forcesexerted on said lever by said condition are compensated by saidextraneous force and said lever is moved in one direction, a source ofauxiliary energy, and means for controllin said energy arranged to beactuated by sai lever upon said movement thereof to produce an impulseof said energy, whereby the time position of said impulse in theinterval of time of the corres onding cycle is a function of the magnituc of the fluid flow at the moment of said impulse.

ERICH ROUCKA.

responding cycle is a function of the magnitude of said condition at themoment of said impulse.

5. A system for transmitting variations in the flow of fluid, comprisinga device mounted in a fluid conduit and movable by dynamic action of theflow of fluid, a source of auxiliary energy, means for controlling saidener and means for appl ing an extraneous orce regularly variab e incycles of regular intervals of time to said device so that at a point ineach of said cycles dcendent' upon the then magnitude of said How offluid the force exerted upon said device by said fluid flow iscompensated by the said regularly variable force to cause cooperation ofsaid device and said secondmentioned means to actuate said auxiliaryenergy controlling means to produce. an impulse of said ener y, wherebythe time position of said impu se in the interval of time of thecorresponding c cle is a function of the ma itude of the uid flow at themoment 0 said impulse.

6. A system for transmitting variations in the flow of fluid, comprisinga device mounted in a fluid conduit and movable by dynamic action of theflow of fluid, a source of auxiliary energy, means for controlling saidenergy, a movable member, operative connections between said movablemember and said device, and means for a flying an extraneous forceregularly varia le in cycles of regular intervals of time to saidmovable member so that at a point in each of said cycles dependent uponthe then magnitude of the fluid flow the force exerted on said movablemember by said device is compensated by the said extraneous force andsaid movable member is moved in one direction to actuate said energcontrolling means to produce an impulse 0 said auxiliahy energy, wherebythe time position of sai impulse in the interval of time of thecorresponding c do is a function of the magnitude of said uid flow atthe moment of the impulse.

7. A system for transmitting a plurality of fluid conditions, com risinga plurality of devices each under in uence of one of the conditions tobe transmitted, a movable member, an operative connection between saidmovable member and each of said devices, a source of auxiliary energy,means for controlling said energy, iind means for ap lying an extraneousforce regularly varia le in cycles of regular intervals of time to saidmovable member whereby at a point in each of said cycles dependent uponthe then magnitudes of all of said fluid conditions the sum of theforces exerted on said movable member by said conditions is compensatedby said extraneous force and said. movable member is moved in onedirection to produce an impulse of said energy so that the time positionof said impulse 1n the interval of time of the corresponding cycle ofvariation of said extraneous force is a function of the magnitudes ofsaid conditions at the moment of said impulse.

8. A system for transmitting variable conditions, comprising movablemeans actuated by force in accordance with variations in the conditionto be transmitted, a lever fulcrumed intermediate its ends, an operativeconnection between one end of said lever and said first-mentioned means,means for applying an extraneous force regularly variable in cycles ofregular intervals of time to the other end of said lever so that at apoint in each of said cycles of variation of said extraneous forcedependent u on the then magnitude of said condition tie forces exertedon said lever by said condition are compensated by said extraneous forceand said lever is moved in one direction, a source of auxiliary energy,and means for controllin said energy arranged to be actuated by sailever upon said movement thereof to produce an impulse of said energy,whereby the time position of said impulse in the interval of time of thecorres onding cycle is a function of the magnitu c of the fluid flow atthe moment of said impulse.

ERICH ROUCKA CERTIFICATE OF CORRECTION.

Patent No. l, 641, 198.

Granted September 6, 1927, to

ERICH ROUCKA.

it is hereby certified that error appears in the printed cpecificat on fthe above numbered patent requiring correction as follows: Page}, [l ne:4 claim 3. beiorethe word "means" insert the words "a spring"; and thattlie laid Letters Patent should be read with this correction thereinthat the same may conform to the record of the case in the PatentOffice.

Signed and sealed this 27th day of December. A. D. 1927.

CERTIFICATE OF CORRECTION.

Patent No. 1,641,198. Granted September 6, 1927. to

ERICH ROUCKA.

it is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page '3,line 94, claim 3. beforethe word "means" insert the words "a spring";and that the aid Letters Patent should be read with this correctiontherein that the same may conform to the record of the case in thePatent Office.

Signed and sealed this 27th day of December, A. D. 1927.

